Anyone running an Aspide with the Xsilite rails, looks like ti to me but I'm no metallurgist, with a USE Alien post? Just bought three Aspide saddles and the bikes I plan on installing them on presently have Alien posts. I installed the first and it appeared the rails were beginning to bow a bit, this was before reaching torque spec, so I backed away to do a little research before proceding (or changing posts). Looking at a saddle new out of the box it appears the rails have a little bit of curvature so maybe I'm being overly cautious. I really like the Alien, has just about perfect setback for me and is plenty light, and I'm hoping the two are compatible. Thanks in advance.